To cite the lookout package in publications, please use:

Kandanaarachchi S, Hyndman R (2026). lookout: Leave One Out Kernel Density Estimates for Outlier Detection. R package version 2.0.2.9000, https://CRAN.R-project.org/package=lookout.

The methods implemented in version 2 are described in:

Hyndman R, Kandanaarachchi S, Turner K (2026). “Lookout 2: Anomaly detection via leave-one-out kernel density estimation.” arXiv:2603.22636, https://robjhyndman.com/publications/lookout2.html.

The original method (old_version = TRUE) is described in:

Kandanaarachchi S, Hyndman R (2022). “Leave-one-out kernel density estimates for outlier detection.” Journal of Computational and Graphical Statistics, 31(2), 586–599. doi:10.1080/10618600.2021.2000425. https://robjhyndman.com/publications/lookout/.

Corresponding BibTeX entries:

  @Manual{,
    title = {{lookout}: Leave One Out Kernel Density Estimates for
      Outlier Detection},
    author = {Sevvandi Kandanaarachchi and Rob J Hyndman},
    year = {2026},
    note = {R package version 2.0.2.9000},
    url = {https://CRAN.R-project.org/package=lookout},
  }

  @Misc{,
    title = {Lookout 2: Anomaly detection via leave-one-out kernel
      density estimation},
    author = {Rob J Hyndman and Sevvandi Kandanaarachchi and Katharine
      Turner},
    year = {2026},
    note = {arXiv:2603.22636},
    url = {https://robjhyndman.com/publications/lookout2.html},
  }

  @Article{,
    title = {Leave-one-out kernel density estimates for outlier
      detection},
    author = {Sevvandi Kandanaarachchi and Rob J Hyndman},
    journal = {Journal of Computational and Graphical Statistics},
    year = {2022},
    volume = {31},
    number = {2},
    pages = {586--599},
    doi = {10.1080/10618600.2021.2000425},
    url = {https://robjhyndman.com/publications/lookout/},
  }